vNUMA : Disable Migration for NUMA HVMs

diff --git a/tools/libxc/xc_hvm_build.c b/tools/libxc/xc_hvm_build.c
--- a/tools/libxc/xc_hvm_build.c
+++ b/tools/libxc/xc_hvm_build.c
@@ -404,6 +404,8 @@
 setup_done:
     if (!rc)
         rc = xc_domain_numa_pinvcpus(xch, dom_layout);
+    if (!rc)
+        rc = xc_domain_disable_migrate(xch, dom_layout->domid);
     return rc;
 }